(19)
(11) EP 2 006 051 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.08.2009 Bulletin 2009/35

(43) Date of publication A2:
24.12.2008 Bulletin 2008/52

(21) Application number: 08016899.0

(22) Date of filing: 20.04.2005
(51) International Patent Classification (IPC): 
B24B 37/00(2006.01)
B24D 13/14(2006.01)
 D04H 1/42(2006.01)
(84) Designated Contracting States:
DE ES FR GB IT

(30) Priority: 21.04.2004 JP 2004125293
21.04.2004 JP 2004125511

(62) Application number of the earlier application in accordance with Art. 76 EPC:
05736655.1 / 1757406

(71) Applicant: Toray Industries, Inc.
Tokyo, 103-8666 (JP)

(72) Inventors:
  • Nonaka, Shuichi
    Otsu-shi Shiga 5200842 (JP)
  • Naruse, Yoshihiro
    Otsu-shi Shiga 5200842 (JP)
  • Ochi, Takashi
    Mishima-shi Shizuoka 4110033 (JP)
  • Matsunase, Takeo
    Moriyama-shi Shiga 5240032 (JP)

(74) Representative: Kador & Partner 
Corneliusstrasse 15
80469 München
80469 München (DE)

   


(54) Abrasive cloth and method for producing nanofiber structure


(57) An abrasive cloth which comprises an article in a sheet form having, in at least a part thereof, nanofibers comprising a thermoplastic polymer and having a number average single fiber fineness of 1 x 10-8 to 2 x 10-4 dtex wherein the sum of single fiber fineness percentages (which is defined in the specification) of a single fiber fineness of 1 x 10-8 to 2 x 10-4 dtex is the range of 60 % or more, and exhibits a stress at 10 % elongation in a longitudinal direction of 5 to 200 N/cm-width; and a method for preparing a nanofiber structure, which comprises providing a nanofiber dispersion having a dispersant and, dispersed therein, nanofibers comprising a thermoplastic polymer and having a number average diameter of 1 to 500 nm, attaching the dispersion to a support, and then removing said dispersant. The above abrasive cloth is excellent in texturing characteristics, and the above method allows the preparation of a nanofiber structure wherein nanofibers form a composite with the support.







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